Japanese beetles are one of the most problematic rose pests and they can riddle rose leaves with holes and leave plants looking bedraggled in no time flat.
Planting roses and alliums together is one of your best options for keeping pests at bay. Both ornamental and edible alliums, like chives, emit a strong, sulfur or onion-like aroma.
Yarrow is highly attractive to an assortment of beneficial insects and growing this pollinator-friendly plant near your roses can help control sawflies and other pests.
In flower gardens, the dreamy purple flowers and silver-green leaves of catmint provide a perfect backdrop for rose bushes.
Most gardeners use parsley simply as a cutting herb and never consider how parsley plants can benefit their gardens.
Another top-notch plant for deterring insects, marigolds are often interplanted in veggie beds to act as trap crops or repellants for pests as varied as aphids, nematodes, and deer.
While alliums and scented geranium deter Japanese beetles, larkspur takes beetle control one step further. Used as a companion plant, larkspur entices Japanese beetles away from rose shrubs and can make roses less buggy.
Although thyme is most commonly grown as a culinary herb, it can be used in other ways for organic gardening.